Gas burner



M. THORSON GAS BURNER Sept. 18, 1934.

Filed Jan. 23, 1953 Patented Sept. 18, 1934 STATES PATENT easier This: invention re a s o: lnnrovements. in ga bumers. ten: householder: commercial use. Que ebiect is to? provideasas burner that; is. capable of. ready impl cation. toeid or-new; heat n slan s without: the: neeessi rget. alter-ins: the slant- A turt-herobieet istes. m vies. a; 'gas burner having a very-high. degree of. hes-tinge eflieieuex and one wh reiniar lati ly sr et'prono tion. at airis oonsmned; with the gas, thus: materialist seduce m ing the eostof. bluner operation.

A. stilt further obieet isto.= provide av gasburner of simple: construction; and few parts, one; that is.- eomnaetin-assembly, durable,- in use: and: not easy: te get out :of order and that is. cheap.- to

manufacture. Astili'furtherobject istepr vide a. gas burner can. he remilatedi topmvide a degree Ofi'hfiflit in aeeordaneewi htemoeratur changes. that isea'pablevof. manual or thermostatie control. ai'litonezv whereiwanroner mixture offgastand' air is alway nrevidediso: that asilent even eomhustionisasweda. free: from spluttening, recurrent ignition and; the like, thus insurin he nmintensmoe of. a steadxandeentinuousheat.

with the. foregoing and: other objects. in. view the intention censistsinthe combination and arrangement. of: parts;v 1Q. he; hereinafitee fully ale.- seribednointedi (mum the claims andiilus rated m the emompanyinadrawine which; forms a. part of; thisapnlieatiem for naatentanctin: whiem- I Fig. I is. atonr-nlanviewoi thei burneruart y in. section. to; aflondia; betten' iilustratiom Fig; a. view of the: burner: partly'imelevae tion and partly im section.

Fig. 3.: is; an. enlarged detaii: .seetienal view of bunnen.

4. is a. View of; the nerfenatedpain: collar before. it is; rollect'on annuiarlyc formed.

Rig. 5. is a. view of the: burner illustrating its applieatiomtmaiheatingznlant- V Likereference eharanters demnte; cem'esponding parts throughout thesevera-L views.

The burner comprises essentially an umran ring. and: an. innen sas; the: air. ring; bein provided-with a. nlunality; of? air'tubes: and the, as

nine: Mina .nhuality of. gas tubes-disposed: whoiiy within airrtuhns; the-air tubeabeins; provided orformedzwith; burnentips.aperforatedaaircollar spaeinethe air-and gas ubeszanart-adiaeent the upoenendmfthe:easituhe;

' -reerenoe.rnumera1 1- denotes a; heating low rins 5 into which is tapped an air pipesfi. and an inner'rhellow ring. 7 into whishistapped a gas pipe. 8. ring: Z is. what may be termed a-gas: ninepand it isofimateriallx smaller diameter than theouter or airring..5.-, so. theta substanr Q9 tialspace-is provided between the: rings. The ringsareeoncentrie. 4

Extending upwardly from the manifold. ring assembly-.5; '7 is a. series of. burner. tuhe'assemblies, eaellof whiehtis. generally indieated at 73.. These 5.5 burner tubesare preferably inelined .withmesnect t0 theaxis of; the. manitold rings 5,. '7,=s.o thatthe burner tubesare in-a conical cluster si -define in 'efieetthe frustum. of a, cone; .These; burner tubes comprise outer. air tuhes .9 which. aretappedinto Z0 t air ring 5. Within Sam air-tubes and concenr this-therewith are. the gas-tubes lQthataretfl l fid into.- the gasring: 7,-sa-id. as tubes. being. of. a diametermaterially smaller than. that of. the air tubes so that a, very considerable air. spaee is 15 formed. between-the tubes. 9,, 10.. The outer ends of the as tubes. 10.- are spaced-inwardly from the eor-resnun-dingends of; theair-tubes and an. elongated. burner tip 11- having its v outer. end closed except: for tiny perforations 1 2 isearriedby each .80

aim tube.

Encpmpassingeach. gas. tube 10 andsnaeed slightly fromtherfree end thereof and. completely filling: the. space: between the. gas. tube. and the surrounding; @irtube is the annular collar 13,. Each collar- 13. is. provided with; passageways. 14 extending entirely through. the collar. and. serving to conduct the air from the air tube 9 upjnto the mixing- -chamber defined within theunper end of. the tube 9 andwithin the tube. 1.1.. These passageways .14 comprise upher portions. which allalieat: anglawith. respect toithe. axisoi the collar and tube assembly. \I-Ience these passage: ways impart a whirling motion. to the, ainas it ingart, theinteriorv of. the tube. 1.1. The. whirling motion of the air is started; justbelowthe. point of. discharge of. the. gas from. the gas. tube 10, and this whirling motion. is. imparted to the. charging: gas, resulting. in an. intimate. comminr gling .ofthe. gas. and the. Therelatively long length. or the cylindrieai mixing chamber defined within the tube 1 1. is advantageous. for. insuring thoroughmixing 0t thegasandiair prior totlie ignition-of themixture. Thisignition onlytakes plaee outside. of or. beyond. the, relatively re;- striated: orifise or orifices L2.in,.the. upperendiof the. tube 11.:

Theburner is so. placedwithin'. the heatihg pl nt that its. tubes. 9 and. tips. extending) 1 10 through the grate 3 when the: ash dump portion thereof is removed. The upper surface of the grate 3 is preferably covered with insulation 15 held in place by angle pieces 16. Referring again to the air pipe 6, the same extends out through the door 2 of the heating plant and is provided with a control valve 17 and leads to a motor operated blower 18 disposed outside the heating plant. The gas pipe 8 likewise extends through the door 2 and is provided with the valve 19 and leads to the supply pipe or main. The valves 17, 19 are provided with handles connected to the control rod 20 that is operatively supported-in the base 21 arranged upon the floor and that extends upwardly through the basement ceiling into a room of the building for manual operation. By manually raising the slide rod 20 the valves 17, 19 may be opened and by depressing said rod the valves may be partly or wholly closed.. A

finger 22 carried by the rod 20 works over the indicator 23 secured to the heating plant wall and graduated in a mannerto denote by the position of said finger whether the valves 17, 19 are open, partly open, or closed. A'pilot pipe 24 provided with a valve 25'extends through the wall of the heating plant into close proximity to the burner tips to ignite the gas mixture released therefrom; 1 r n 'The sliding control rod 20 may, of course, be operated by a thermostat if desired. When the gasand air are turned on the blower motor is started and the gas and air enter the rings 7, 5 respectively, the gas passing through the burner tubes '10 and out into that portion of the tubes 9 beyondthecollars 13 and then into the'gas b'urner tips 11. The air from the ring 5 passes out through the tubes 9 and through the several air passages 14 in the collar 13 to mix with the gas. The angular formation of the air passages l l directs'the air, under pressure, into the gas from the gas tubes and a-fuel turbulence chamber is formed in that part of the air tube beyond the collar and-in the gas tip and the" thoroughly mixed fuel coming out through the perforation 12 is-ignitedby the gas pilot, the flame being directed against any suitable bafiie plate '(not shown) that may be disposed upon the grate inside the circle of gas tips, such'plate or plates being preferably made of a good heat conducting material. The fuel withinthe turbulence chamher is preheated in a very efficient manner after the burner is in operation for a short period of time.

While the foregoing is one embodiment of my invention it is to be understood that changes and modifications may be resorted to without departure from the scope or spirit of the invention as defined in the claims. H

What isclaimed is:- n f 1. In a gas burner, the combination of an outer hollow manifold ring, an innerflhollow manifold ring within said outer ring, means for supplying air under pressure to said outer manifold ring, 'means for supplyinggas under pressure to said inner manifold ring, a series of burner tubes'disposed at spaced points around said manifold rings and extending upwardly therefrom and inclined at an angle to the vertical axis of said rings whereby said burner tubesdefine in effect the frustum ofa cone,,each of said burner tubes comprising an outer air tube secured to and communicating with said'outer manifold ring, an inner gas tube within said outer air tube and secured'to and communicating ,with. said innerfmanifol'd ring, an annularme'mber interposed between said inner the upper end of said cylindrical tube of smaller diameter than the interior of said tube.

2. In a gas burner, the combination of an outer hollow manifold ring, an inner hollow manifold ring within said outer ring, means for supplying air under pressure to said outer manifold ring, means for supplying gas under pressure to said inner manifold ring, a-seriesof burner tubes dis posed at spaced points around said manifold rings and extending upwardly therefrom and inclined at an angle to the vertical axis of said rings whereby said series of burner tubes define in effect the frustum of a cone, each of said burner tubes comprising an outer air tube secured to and communicating with said outer manifold ring; an inner gas tube within said outer air tube and secured to and communicating with said inner manifold ring, a relatively long mixing chamber extending beyond theupper end of each inner gas tube, theair from said outer air tube and the gas from said inner gas tube contacting adjacent to the lowerend of said mixing" chamber and passing upwardly through said mixing chamber, and anorifice in the upper end of said mixing chamber'of smaller diameter than the interior of said mixing chamber.

3. In a gas burner adapted for installation in a heating plant of the type havinga grate provided with a substantially circular central opening and an ash-pit below the grate, the'cornbination of an outer hollow manifold ring, an inner hollow manifold ring within said outer ring, said"1nanifold ringsbeing adaptedfor disposal within said ash-pit below the grate, means forsupplying air under pressure to said outer manifold ring, means for supplying gas under pressure to said inner manifoldring, a series of burner'tubesdisposed at spaced points aroundsaid manifold rings, said burner tubes extending upwardly and inwardly in'a conically shaped cluster for extending upwardly and inwardly through-the substantially circular central opening'withinthe grateyeach of said burner tubes comprising an outer air tube secured to and communicating with said. .outer manifold ring, an inner gas tube within said outer air tube and secured to and communicating-with said inner manifold ring; and means associated with the upper portion of each burner tube. for 1.

causing commingling of the air and gas prior to ignition. 1 4. In a gas burner. adapted for installation in a heating plant comprising a furnace having a re+ movable grate member and an ash-pit therebelow, a hollow air manifold defining in plan an. open and unobstructed frame for positioning within the ash-pit in substantially concentric relation to the furnace, a hollow gas manifold disposed within' the air manifold in concentricspaced relation thereto, burner tube assemblies extending upward from said manifolds, said assemblie's being disposed" and of proper length to-extendl-upward through and beyond the opening provided by removal'of said grate member, the burner tube posed within the air manifold in concentric spaced relation thereto, burner tube assemblies extending upward from said manifolds, said assemblies being disposed and of proper length to extend up ward through and beyond the opening provided by removal of said grate member, the burner tube assemblies each comprising an outer air tube opening at its lower end into the air manifold and an inner gas tube opening at its lower end into the gas manifold, and means for supplying gas and air to the respective manifolds, the space enclosed by the air manifold being open and unobstructed from beneath said air manifold.

MARTIN THORSON. 

